Ubufakazi bokuqhuma kwe-Shenhai
Ixoxa ngezici zamakhemikhali, ukusetshenziswa kwezimboni, kanye nokucatshangelwa kokuphepha kokuphatha i-ethylene.
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Ixoxa ngezici zamakhemikhali, ukusetshenziswa kwezimboni, kanye nokucatshangelwa kokuphepha kokuphatha i-ethylene.